Joining of cvd diamond bodies to metal structures

C - Chemistry – Metallurgy – 04 – B

Patent

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C04B 37/02 (2006.01) H01P 1/08 (2006.01)

Patent

CA 2383325

The invention is concerned with a method of forming a joint between a CVD (chemical vapour deposition) diamond and a metal support structure, and with a joint formed by the method. In the method, a CVD diamond body (14) is bonded to a ceramic body (16) having thermal expansion characteristics compatible with those of CVD diamond. The ceramic body (16) is in turn bonded to a dimensionally compliant, intermediate metal element (18). The metal element is then secured to the metal supporting structure (12). Optimally, the intermediate metal element has thermal expansion characteristics between those of the ceramic body and the metal supporting structure. In one application, the joint may be used to mount the window in a gyrotron viewport flange.

L'invention concerne un procédé de formation d'un joint entre un diamant déposé (par dépôt chimique en phase vapeur) et une structure de support métallique, et un joint formé selon ce procédé. Dans ledit procédé, un corps en diamant déposé (14) est fixé à un corps en céramique (16) présentant des caractéristiques d'expansion thermique compatibles avec celles du diamant déposé. Le corps en céramique (16) est à son tour fixé à un élément métallique intermédiaire (18) de dimensions correspondantes. Cet élément métallique est ensuite fixé à la structure de support métallique (12). De façon optimale, l'élément métallique intermédiaire présente des caractéristiques d'expansion thermique entre celles du corps en céramique et de la structure de support métallique. Dans une forme de réalisation, le joint peut être utilisé pour monter la fenêtre dans une bride de judas de gyroron.

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